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Reduced price! 50:1 Micro Metal Gearmotor MP 6V View larger

50:1 Micro Metal Gearmotor MP 6V

Miniature medium-power, 6 V brushed DC motor with a 51.45:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. Pololu 2365

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ID: 198458

14,71€ gross (23% VAT)
11,96€ net

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Data sheet

DC motor powerMP
Gear materialMetal
Gear ratio50:1
Rotation speed420RPM
Shaft diameter3 mm
Shaft shapeD
Obustronny wał silnikaNie
Power supply voltage6V

More info


This gearmotor is a miniature medium-power, 6 V brushed DC motor with a 51.45:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter.

Key specs at 6 V: 420 RPM and 40 mA with no load, 12 oz-in (0.9 kg-cm) and 0.7 A at stall.

These tiny brushed DC gearmotors are available in a wide range of gear ratios—from 5:1 up to 1000:1—and with five different motors: high-power 6 V and 12 V motors with long-life carbon brushes (HPCB), and high-power (HP), medium power (MP), and low power (LP) 6 V motors with shorter-life precious metal brushes. The 6 V and 12 V HPCB motors offer the same performance at their respective nominal voltages, just with the 12 V motor drawing half the current of the 6 V motor. The 6 V HPCB and 6 V HP motors are identical except for their brushes, which only affect the lifetime of the motor.

The HPCB versions (shown on the left in the picture below) can be differentiated from versions with precious metal brushes (shown on the right) by their copper-colored terminals. Note that the HPCB terminals are 0.5 mm wider than those on the other micro metal gearmotor versions (2 mm vs. 1.5 mm), and they are about 1 mm closer together (6 mm vs. 7 mm).

Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. The recommended upper limit for instantaneous torque is 35 oz-in (2.5 kg-cm) for the 1000:1 gearboxes and 25 oz-in (2 kg*cm) for all the other gear ratios; we strongly advise keeping applied loads well under this limit. Stalls can also result in rapid (potentially on the order of seconds) thermal damage to the motor windings and brushes, especially for the versions that use high-power (HP and HPCB) motors; a general recommendation for brushed DC motor operation is 25% or less of the stall current.


  • Gear ratio: 51.45:1
  • Free-run speed @ 6V: 420 rpm
  • Free-run current @ 6V: 40 mA
  • Stall current @ 6V: 700 mA
  • Stall torque @ 6V: 12 oz·in
  • Extended motor shaft?: N
  • Motor type: 0.7A stall @ 6V (MP 6V)
  • Size: 10 × 12 × 26 mm (output shaft adds 9 mm to the 26 mm length)
  • Weight: 9.5 g
  • Shaft diameter: 3 mm, D shaft